Merge branch 'feat_docs' into 'dev'
Docs: update README See merge request dt-insight-front/infrastructure/dt-sql-parser!4
This commit is contained in:
zhifei
commit
c82ef9e03f
@ -1,15 +1,10 @@
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# dt-sql-parser
|
||||
|
||||
summary
|
||||
|
||||
## How to contribute
|
||||
|
||||
## Prerequisites
|
||||
|
||||
## Semantic Versioning
|
||||
|
||||
## Branch Organization
|
||||
|
||||
## Release Process
|
||||
|
||||
## Source Code Organization
|
||||
|
||||
33
NeREADME.md
33
NeREADME.md
@ -1,33 +0,0 @@
|
||||
# dt-sql-parser
|
||||
|
||||
[![NPM version][npm-image]][npm-url]
|
||||
|
||||
[npm-image]: https://img.shields.io/npm/v/dt-sql-parser.svg?style=flat-square
|
||||
[npm-url]: https://www.npmjs.com/package/dt-sql-parser
|
||||
|
||||
## Installation
|
||||
|
||||
## Usage
|
||||
|
||||
### Basic
|
||||
|
||||
### Syntax validation
|
||||
|
||||
### Visitor
|
||||
|
||||
### Listener
|
||||
|
||||
## Example
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||||
|
||||
## Roadmap
|
||||
|
||||
- Unify parser generate to Antlr4
|
||||
- Generic SQL
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||||
- Flink SQL
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||||
- Libra SQL
|
||||
- TiDB
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||||
MySQL Compatible Syntax
|
||||
|
||||
## Contributing
|
||||
|
||||
## License
|
||||
228
README-zh_CN.md
Normal file
228
README-zh_CN.md
Normal file
@ -0,0 +1,228 @@
|
||||
# dt-sql-parser
|
||||
|
||||
[![NPM version][npm-image]][npm-url]
|
||||
|
||||
[npm-image]: https://img.shields.io/npm/v/dt-sql-parser.svg?style=flat-square
|
||||
[npm-url]: https://www.npmjs.com/package/dt-sql-parser
|
||||
|
||||
[English](./README.md) | 简体中文
|
||||
|
||||
dt-sql-parser 是一个基于 [ANTLR4](https://github.com/antlr/antlr4) 开发的， 针对大数据领域的 **SQL Parser** 项目。通过[ANTLR4](https://github.com/antlr/antlr4) 默认生成的 Parser、Visitor 和 Listener 对象，我们可以轻松的做到对 SQL 语句的**语法检查**（Syntax Validation）、**词法分析**（Tokenizer)、 **遍历 AST** 节点等功能。此外，还提供了几个辅助方法, 例如 SQL 切割（Split）、过滤 SQL 语句中的 `--` 和 `/**/` 等类型的注释。
|
||||
|
||||
已支持的 SQL 类型：
|
||||
|
||||
- MySQL
|
||||
- Flink SQL
|
||||
- Spark SQL
|
||||
- Hive SQL
|
||||
- PL/SQL
|
||||
|
||||
> 提示：当前的 Parser 是 `Javascript` 语言版本，如果有必要，可以尝试编译 Grammar 文件到其他目标语言
|
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|
||||
## 安装
|
||||
|
||||
```bash
|
||||
// use npm
|
||||
npm i dt-sql-parser --save
|
||||
|
||||
// use yarn
|
||||
yarn add dt-sql-parser
|
||||
```
|
||||
|
||||
## 使用
|
||||
|
||||
### 语法校验（Syntax Validation）
|
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|
||||
首先需要声明相应的 Parser 对象，不同的 SQL 类型需要引入不同的 Parser 对象处理，例如如果是
|
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针对 **Flink SQL**，则需要单独引入 **FlinkSQL** Parser，这里我们使用 **GenericSQL** 作为示例：
|
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|
||||
```javascript
|
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import { GenericSQL } from 'dt-sql-parser';
|
||||
|
||||
const parser = new GenericSQL();
|
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|
||||
const correctSql = 'select id,name from user1;';
|
||||
const errors = parser.validate(correctSql);
|
||||
console.log(errors);
|
||||
```
|
||||
|
||||
输出：
|
||||
|
||||
```javascript
|
||||
/*
|
||||
[]
|
||||
*/
|
||||
```
|
||||
|
||||
校验失败示例：
|
||||
|
||||
```javascript
|
||||
const incorrectSql = 'selec id,name from user1;'
|
||||
const errors = parser.validate(incorrectSql);
|
||||
console.log(errors);
|
||||
```
|
||||
|
||||
输出：
|
||||
|
||||
```javascript
|
||||
/*
|
||||
[
|
||||
{
|
||||
endCol: 5,
|
||||
endLine: 1,
|
||||
startCol: 0,
|
||||
startLine: 1,
|
||||
message: "mismatched input 'SELEC' expecting {<EOF>, 'ALTER', 'ANALYZE', 'CALL', 'CHANGE', 'CHECK', 'CREATE', 'DELETE', 'DESC', 'DESCRIBE', 'DROP', 'EXPLAIN', 'GET', 'GRANT', 'INSERT', 'KILL', 'LOAD', 'LOCK', 'OPTIMIZE', 'PURGE', 'RELEASE', 'RENAME', 'REPLACE', 'RESIGNAL', 'REVOKE', 'SELECT', 'SET', 'SHOW', 'SIGNAL', 'UNLOCK', 'UPDATE', 'USE', 'BEGIN', 'BINLOG', 'CACHE', 'CHECKSUM', 'COMMIT', 'DEALLOCATE', 'DO', 'FLUSH', 'HANDLER', 'HELP', 'INSTALL', 'PREPARE', 'REPAIR', 'RESET', 'ROLLBACK', 'SAVEPOINT', 'START', 'STOP', 'TRUNCATE', 'UNINSTALL', 'XA', 'EXECUTE', 'SHUTDOWN', '--', '(', ';'}"
|
||||
}
|
||||
]
|
||||
*/
|
||||
```
|
||||
|
||||
先实例化 Parser 对象，然后使用 `validate` 方法对 SQL 语句进行校验，如果校验失败，则返回一个包含 `error` 信息的数组。
|
||||
|
||||
### 词法分析（Tokenizer）
|
||||
|
||||
必要场景下，可单独对 SQL 语句进行词法分析，获取所有的 Tokens 对象：
|
||||
|
||||
```javascript
|
||||
import { GenericSQL } from 'dt-sql-parser';
|
||||
|
||||
const parser = new GenericSQL()
|
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const sql = 'select id,name,sex from user1;'
|
||||
const tokens = parser.getAllTokens(sql)
|
||||
console.log(tokens)
|
||||
/*
|
||||
[
|
||||
{
|
||||
channel: 0
|
||||
column: 0
|
||||
line: 1
|
||||
source: [SqlLexer, InputStream]
|
||||
start: 0
|
||||
stop: 5
|
||||
tokenIndex: -1
|
||||
type: 137
|
||||
_text: null
|
||||
text: "SELECT"
|
||||
},
|
||||
...
|
||||
]
|
||||
*/
|
||||
```
|
||||
|
||||
### 访问者模式（Visitor）
|
||||
|
||||
使用 Visitor 模式访问 AST 中的指定节点
|
||||
|
||||
```javascript
|
||||
import { GenericSQL, SqlParserVisitor } from 'dt-sql-parser';
|
||||
|
||||
const parser = new GenericSQL()
|
||||
const sql = `select id,name from user1;`
|
||||
// parseTree
|
||||
const tree = parser.parse(sql)
|
||||
class MyVisitor extends SqlParserVisitor {
|
||||
// 重写 visitTableName 方法
|
||||
visitTableName(ctx) {
|
||||
let tableName = ctx.getText().toLowerCase()
|
||||
console.log('TableName', tableName)
|
||||
}
|
||||
// 重写 visitSelectElements 方法
|
||||
visitSelectElements(ctx) {
|
||||
let selectElements = ctx.getText().toLowerCase()
|
||||
console.log('SelectElements', selectElements)
|
||||
}
|
||||
}
|
||||
const visitor = new MyVisitor()
|
||||
visitor.visit(tree)
|
||||
|
||||
/*
|
||||
SelectElements id,name
|
||||
TableName user1
|
||||
*/
|
||||
|
||||
```
|
||||
|
||||
> 提示：使用 Visitor 模式时，节点的方法名称可以在对应 SQL 目录下的 Visitor 文件中查找
|
||||
|
||||
### 监听器（Listener）
|
||||
|
||||
Listener 模式，利用 [ANTLR4](https://github.com/antlr/antlr4) 提供的 ParseTreeWalker 对象遍历 AST，进入各个节点时调用对应的方法。
|
||||
|
||||
```javascript
|
||||
import { GenericSQL, SqlParserListener } from 'dt-sql-parser';
|
||||
|
||||
const parser = new GenericSQL();
|
||||
const sql = 'select id,name from user1;'
|
||||
// parseTree
|
||||
const tree = parser.parse(sql)
|
||||
class MyListener extends SqlParserListener {
|
||||
enterTableName(ctx) {
|
||||
let tableName = ctx.getText().toLowerCase()
|
||||
console.log('TableName', tableName)
|
||||
}
|
||||
enterSelectElements(ctx) {
|
||||
let selectElements = ctx.getText().toLowerCase()
|
||||
log('SelectElements', selectElements)
|
||||
}
|
||||
}
|
||||
const listenTableName = new MyListener();
|
||||
parser.listen(listenTableName, tree);
|
||||
|
||||
/*
|
||||
SelectElements id,name
|
||||
TableName user1
|
||||
*/
|
||||
|
||||
```
|
||||
|
||||
> 提示：使用 Listener 模式时，节点的方法名称可以在对应 SQL 目录下的 Listener 文件中查找
|
||||
|
||||
### 清理注释内容
|
||||
|
||||
清除注释和前后空格
|
||||
|
||||
```javascript
|
||||
import { cleanSql } from 'dt-sql-parser';
|
||||
|
||||
const sql = `-- comment comment
|
||||
select id,name from user1; `
|
||||
const cleanedSql = cleanSql(sql)
|
||||
console.log(cleanedSql)
|
||||
|
||||
/*
|
||||
select id,name from user1;
|
||||
*/
|
||||
```
|
||||
|
||||
### 切割 SQL （Split）
|
||||
|
||||
SQL 太大的情况下，我们可以先将SQL语句按 `;` 切割，然后逐句处理。
|
||||
|
||||
```javascript
|
||||
import { splitSql } from 'dt-sql-parser';
|
||||
|
||||
const sql = `select id,name from user1;
|
||||
select id,name from user2;`
|
||||
const sqlList = splitSql(sql)
|
||||
console.log(sqlList)
|
||||
|
||||
/*
|
||||
["select id,name from user1;", "\nselect id,name from user2;"]
|
||||
*/
|
||||
```
|
||||
|
||||
### 其他 API
|
||||
|
||||
- parserTreeToString (input: string)
|
||||
|
||||
将 SQL 解析成 `List-like` 风格的树形字符串， 一般用于测试
|
||||
|
||||
## 路线图
|
||||
|
||||
- Auto-complete
|
||||
- Format code
|
||||
|
||||
## 许可证
|
||||
|
||||
[MIT](./LICENSE)
|
||||
264
README.md
264
README.md
@ -1,113 +1,233 @@
|
||||
> 如果你只想单纯的解析(SQL/SparkSQL)，请使用 [cuopyue](https://github.com/HSunboy/cuopyue)
|
||||
|
||||
# dt-sql-parser
|
||||
|
||||
[![NPM version][npm-image]][npm-url]
|
||||
|
||||
English | [简体中文](./README-zh_CN.md)
|
||||
|
||||
[npm-image]: https://img.shields.io/npm/v/dt-sql-parser.svg?style=flat-square
|
||||
[npm-url]: https://www.npmjs.com/package/dt-sql-parser
|
||||
|
||||
本项目用于处理SQL，目前含有功能
|
||||
dt-sql-parser is a **SQL Parser** project built with [ANTLR4](https://github.com/antlr/antlr4), and it's mainly for the **BigData** domain. The [ANTLR4](https://github.com/antlr/antlr4) generated the basic Parser, Visitor, and Listener, so it's easy to complete the **syntax validation**, **tokenizer**, **traverse** the AST, and so on features.
|
||||
|
||||
1. 校验SQL，hive SQL，impala SQL，flinkSQL 等语法，并给予错误信息与建议提示
|
||||
2. SQL分割,根据`;`将sql分割为数组
|
||||
3. 去除SQL中的的注释(目前支持`--`,`/**/`类型注释)
|
||||
Besides, it' provides some helper methods, like **split** SQL, and filter the `--` and `/**/` types of comments in SQL.
|
||||
|
||||
## 用法
|
||||
Supported SQL:
|
||||
|
||||
### 过滤注释 / SQL分割
|
||||
- MySQL
|
||||
- Flink SQL
|
||||
- Spark SQL
|
||||
- Hive SQL
|
||||
- PL/SQL
|
||||
|
||||
``` javascript
|
||||
const dtFilter=require("dt-sql-parser").filter;
|
||||
const sql=`
|
||||
/*sttttttttart*/create table /*hhhhhhhh
|
||||
hhhhhh
|
||||
aaaaaa*/ sql_task_comment_test(id int comment 'id') comment 'sql test';
|
||||
--eeeeeeeend
|
||||
`
|
||||
console.log(dtFilter.filterComments(sql))//过滤注释
|
||||
console.log(dtFilter.splitSql(sql));//分割sql
|
||||
>Tips: This project is the default for Javascript language, also you can try to compile it to other languages if you need.
|
||||
|
||||
## Installation
|
||||
|
||||
```bash
|
||||
// use npm
|
||||
npm i dt-sql-parser --save
|
||||
|
||||
// use yarn
|
||||
yarn add dt-sql-parser
|
||||
```
|
||||
|
||||
### 校验hive sql语法
|
||||
## Usage
|
||||
|
||||
### Syntax Validation
|
||||
|
||||
First, we need to import the **Parser** object from `dt-sql-parser`, the different language needs
|
||||
different Parser, so if you need to handle the **Flink SQL**, you can import the **FlinkSQL Parser**.
|
||||
|
||||
The below is a **GenericSQL Parser** example:
|
||||
|
||||
```javascript
|
||||
const dtSqlParser=require("dt-sql-parser").parser;
|
||||
import { GenericSQL } from 'dt-sql-parser';
|
||||
|
||||
console.log(dtSqlParser.parseSyntax("selet * form",'hive'));
|
||||
const parser = new GenericSQL();
|
||||
|
||||
const correctSql = 'select id,name from user1;';
|
||||
const errors = parser.validate(correctSql);
|
||||
console.log(errors);
|
||||
```
|
||||
|
||||
Output:
|
||||
|
||||
```javascript
|
||||
/*
|
||||
{
|
||||
"text": "selet",//错误部分
|
||||
"token": "REGULAR_IDENTIFIER",//类型
|
||||
"line": 0,
|
||||
"loc": {//错误位置信息
|
||||
"first_line": 1,
|
||||
"last_line": 1,
|
||||
"first_column": 0,
|
||||
"last_column": 5
|
||||
},
|
||||
"ruleId": "0",
|
||||
"expected": [//建议输入内容
|
||||
{
|
||||
"text": "select",//建议内容
|
||||
"distance": 1//建议优先级
|
||||
},
|
||||
{
|
||||
"text": "delete",
|
||||
"distance": 2
|
||||
}
|
||||
],
|
||||
"recoverable": false,
|
||||
"incompleteStatement": true
|
||||
}
|
||||
[]
|
||||
*/
|
||||
```
|
||||
|
||||
## API
|
||||
Validate failed:
|
||||
|
||||
### filter
|
||||
```javascript
|
||||
const incorrectSql = 'selec id,name from user1;'
|
||||
const errors = parser.validate(incorrectSql);
|
||||
console.log(errors);
|
||||
```
|
||||
|
||||
#### function filterComments(sql:string):string
|
||||
Output:
|
||||
|
||||
过滤 `sql` 注释(支持`/*`和`--`)
|
||||
```javascript
|
||||
/*
|
||||
[
|
||||
{
|
||||
endCol: 5,
|
||||
endLine: 1,
|
||||
startCol: 0,
|
||||
startLine: 1,
|
||||
message: "mismatched input 'SELEC' expecting {<EOF>, 'ALTER', 'ANALYZE', 'CALL', 'CHANGE', 'CHECK', 'CREATE', 'DELETE', 'DESC', 'DESCRIBE', 'DROP', 'EXPLAIN', 'GET', 'GRANT', 'INSERT', 'KILL', 'LOAD', 'LOCK', 'OPTIMIZE', 'PURGE', 'RELEASE', 'RENAME', 'REPLACE', 'RESIGNAL', 'REVOKE', 'SELECT', 'SET', 'SHOW', 'SIGNAL', 'UNLOCK', 'UPDATE', 'USE', 'BEGIN', 'BINLOG', 'CACHE', 'CHECKSUM', 'COMMIT', 'DEALLOCATE', 'DO', 'FLUSH', 'HANDLER', 'HELP', 'INSTALL', 'PREPARE', 'REPAIR', 'RESET', 'ROLLBACK', 'SAVEPOINT', 'START', 'STOP', 'TRUNCATE', 'UNINSTALL', 'XA', 'EXECUTE', 'SHUTDOWN', '--', '(', ';'}"
|
||||
}
|
||||
]
|
||||
*/
|
||||
```
|
||||
|
||||
#### function splitSql(sql:string):Array<string>
|
||||
We instanced a Parser object, and use the **validate** method to check the SQL syntax, if failed
|
||||
returns an array object includes **error** message.
|
||||
|
||||
自动去除注释，并且提取出各个 `sql`
|
||||
### Tokenizer
|
||||
|
||||
### parser
|
||||
Get all **tokens** by the Parser:
|
||||
|
||||
#### function parseSyntax(sql:string|Array<string>, type?:string):Object|boolean
|
||||
```javascript
|
||||
import { GenericSQL } from 'dt-sql-parser';
|
||||
|
||||
校验 `sql` 语法，如果没错误，则返回 `false`，否则返回错误详细信息
|
||||
const parser = new GenericSQL()
|
||||
const sql = 'select id,name,sex from user1;'
|
||||
const tokens = parser.getAllTokens(sql)
|
||||
console.log(tokens)
|
||||
/*
|
||||
[
|
||||
{
|
||||
channel: 0
|
||||
column: 0
|
||||
line: 1
|
||||
source: [SqlLexer, InputStream]
|
||||
start: 0
|
||||
stop: 5
|
||||
tokenIndex: -1
|
||||
type: 137
|
||||
_text: null
|
||||
text: "SELECT"
|
||||
},
|
||||
...
|
||||
]
|
||||
*/
|
||||
```
|
||||
|
||||
可以提供一个含有两个字符串的数组，代表被光标分割的两个 `sql片段`
|
||||
### Visitor
|
||||
|
||||
#### function parserSql(sql:string|Array<string>, type?:string):Object
|
||||
Traverse the tree node by the Visitor:
|
||||
|
||||
解析 `sql` 语法，根据上下文提示补全字段与其它辅助信息
|
||||
```javascript
|
||||
import { GenericSQL, SqlParserVisitor } from 'dt-sql-parser';
|
||||
|
||||
可以提供一个含有两个字符串的数组，代表被光标分割的两个sql片段
|
||||
const parser = new GenericSQL()
|
||||
const sql = `select id,name from user1;`
|
||||
// parseTree
|
||||
const tree = parser.parse(sql)
|
||||
class MyVisitor extends SqlParserVisitor {
|
||||
// overwrite visitTableName
|
||||
visitTableName(ctx) {
|
||||
let tableName = ctx.getText().toLowerCase()
|
||||
console.log('TableName', tableName)
|
||||
}
|
||||
// overwrite visitSelectElements
|
||||
visitSelectElements(ctx) {
|
||||
let selectElements = ctx.getText().toLowerCase()
|
||||
console.log('SelectElements', selectElements)
|
||||
}
|
||||
}
|
||||
const visitor = new MyVisitor()
|
||||
visitor.visit(tree)
|
||||
|
||||
### flinksqlParser
|
||||
/*
|
||||
SelectElements id,name
|
||||
TableName user1
|
||||
*/
|
||||
|
||||
#### function flinksqlParser (sql: sql): SyntaxError
|
||||
```
|
||||
|
||||
校验 `flinksql` 语法。
|
||||
> Tips: The node's method name can be found in the Visitor file under the corresponding SQL directory
|
||||
|
||||
>本项目文档不是很详细，也不准确（暂时没精力写），项目功能可以满足 hivesql，sql，impala，flinksql 的语法检查和提示功能。
|
||||
具体使用方式可以参照代码中的 ts 类型。
|
||||
----
|
||||
### Listener
|
||||
|
||||
hive，impala语法解析文件来自[Hue](https://github.com/cloudera/hue)
|
||||
Access the specified node in the AST by the Listener
|
||||
|
||||
----
|
||||
```javascript
|
||||
import { GenericSQL, SqlParserListener } from 'dt-sql-parser';
|
||||
|
||||
### ChangeLog
|
||||
const parser = new GenericSQL();
|
||||
const sql = 'select id,name from user1;'
|
||||
// parseTree
|
||||
const tree = parser.parse(sql)
|
||||
class MyListener extends SqlParserListener {
|
||||
enterTableName(ctx) {
|
||||
let tableName = ctx.getText().toLowerCase()
|
||||
console.log('TableName', tableName)
|
||||
}
|
||||
enterSelectElements(ctx) {
|
||||
let selectElements = ctx.getText().toLowerCase()
|
||||
log('SelectElements', selectElements)
|
||||
}
|
||||
}
|
||||
const listenTableName = new MyListener();
|
||||
parser.listen(listenTableName, tree);
|
||||
|
||||
- 1.1.8 添加转义字符支持
|
||||
- 1.1.9 添加函数的中括号语法支持[ split(nameList](0) )
|
||||
- 1.2.0 添加 ts，添加测试
|
||||
- 2.0.0 添加flinksql语法检查
|
||||
- 3.0.0 拆分hive，impala，集成最新 `HUE` 方案
|
||||
/*
|
||||
SelectElements id,name
|
||||
TableName user1
|
||||
*/
|
||||
|
||||
```
|
||||
|
||||
> Tips: The node's method name can be found in the Listener file under the corresponding SQL directory
|
||||
|
||||
### Clean
|
||||
|
||||
Clear the **comments** and **spaces** before and after
|
||||
|
||||
```javascript
|
||||
import { cleanSql } from 'dt-sql-parser';
|
||||
|
||||
const sql = `-- comment comment
|
||||
select id,name from user1; `
|
||||
const cleanedSql = cleanSql(sql)
|
||||
console.log(cleanedSql)
|
||||
|
||||
/*
|
||||
select id,name from user1;
|
||||
*/
|
||||
```
|
||||
|
||||
### Split SQL
|
||||
|
||||
When the SQL text is very big, you can think about to split it by `;` , and handle it by each line.
|
||||
|
||||
```javascript
|
||||
import { splitSql } from 'dt-sql-parser';
|
||||
|
||||
const sql = `select id,name from user1;
|
||||
select id,name from user2;`
|
||||
const sqlList = splitSql(sql)
|
||||
console.log(sqlList)
|
||||
|
||||
/*
|
||||
["select id,name from user1;", "\nselect id,name from user2;"]
|
||||
*/
|
||||
```
|
||||
|
||||
### Other API
|
||||
|
||||
- parserTreeToString(input: string)
|
||||
|
||||
Parse the input and convert the AST to a `List-like` tree string.
|
||||
|
||||
## Roadmap
|
||||
|
||||
- Auto-complete
|
||||
- Format code
|
||||
|
||||
## License
|
||||
|
||||
[MIT](./LICENSE)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user